Apparatus employed in drawing and spinning hemp, flax, and other fibrous materials



J. LOVETT.

APPARATUS EMPLOYED IN DRAWING AND SPINNING HEMP, FLAX, AND OTHER FIBROUS MATERIALS.

APPLICATION FILED OCT. 23. 1919.

1,345,203 Patented June 29,1920.

2 SHEETS-SHEET I.

nvvewron Jbasr-w Lo verr I. LOVETT.

APPARATUS EMPLOYED IN DRAWING AND SPINNING HEMP, FLAX, AND OTHER FIBBOUS MATERIALS.

. APPLICATION FILED OCT. 23. I919.

2 SHEETS-SHEET 2.

INVENTOR J'osm-H Lor UNITED v STATES,

PATENT o FIcE."

JOSEPH LOVETT, or DEPTFORD, LoNDoN, ENeL Nn'AssIeNon. or ONE-HALF T0 LoN-DoN SPINNING COMPANY, LIMITED, or DEPTFORD, LONDON, ENGLAND.

APPARATUS EMPLOYED IN DRAWING AND SPINNING HEMP, FLAX, AND OTHER FIBROUS MATERIALS. 3

Specification of LettersPatent. Patented J jne 29, 1Q2() Application filed October 23, 1919. Serial No. 332,778.

To all whom it may concern:

Be it known that I, J OSEPH Lovn'r'r, a subject of the King'of Great Britain, residing at Trundleys Road, Deptford, in the county of London, England, have invented new and useful Improvements in Apparatus Em ployed in Drawing and Spinning Hemp, Flax, and other Fibrous Materials, of which the following is a specification.

This invention relates to nippers, or condensers, which control the passage of the slivers of fiber from the endless chains of gill-pins to the portions of the apparatus which spin such fibers into'yarn, and the said invention has for its objectjto provide nippers, or condensers, which overcome objections incidental to the nippers, or condensers, as hitherto constructed and which are more eflicient in action, more durable and more readily cleaned and adjusted and also enable a better quality of yarn to be produced than is the case with such devices as hitherto constructed.

According to this invention, in place of the vertical spring which has hitherto been employed to give yielding spring action of the nipper-jaw and which has/not given satisfactory pressure upon the fiber, there is employed in the construction according to.

this invention, a torsional spring which acts axially upon the movable jaw to give It movement of partial rotation in a circular recess in the passage through the trumpetmouthed casting, or throat-piece, through which passage the fibers pass from the endless chains of gill-pins to the spinning por tions of the apparatus the lower part of the trumpet-mouth of the casting, or throatpiece, being preferably inclined downward and forward for the readier passage of the gill-pins past the said casting, or throatpiece.

The said nipper-j aw is securedto a shaft capable of turning in suitable bearings part of the aforesaid circular recess constituting the fixed nipper jaw, the. saidpart being preferably removable and constituted by a piece -a forward continuation of which forms an inverted V, or U, shaped upper part of the passage for the fiber to the spinning portion of the apparatus, the said removable part being fixed in position so that it can be readily removed when worn and be replaced by a new piece. The said inwhichtakes the wear is preferably made so that it can readily be replaced, this being preferably done by making the said part in the form of a roller capable of being turned in a circular recess in the body-part of the said movable nipper-jaw and of being fixed in position so that, when worn, it can be readily loosened'and turned to bring a fresh portion of its periphery into position to receive the wear. When worn all around it can be withdrawn and replaced in a position re" versed end for end and the unworn part be used in the same way again. i

The spring which gives the yielding action to the movable jaw is a coiled spring which is arranged around the shaft which carries the said jaw and is connected with the said. jaw and some fixed part of the ap paratus in such a way as to turn the said jaw in the direction for nipping the fibers, but be capable of yieldingsuiiiciently under the action of the fibers passing between the nipping jaws,-the ends of the said spring being respectively connected with the nipper shaft and'some fixed part and allowing of the said shaft and nipper-j aw being turned as far as allowed by a suitable stop, to open widely the passage-way through the nipper when it is desired to clear knots, or remove any accumulation of fibers which might tend to obstruct the passage-way and interfere with proper working.

I will describe, withreference to the accompanying drawing, a device constructed in accordance with this" invention, but I do. not limit myselfto the precise details illus trated.

Figure 1 is a side elevation, Fig 2 is a longitudinal vertical section, on the line 1, 2,

Fig. 1, Fig. 3 is transverse vertical section on the line 3,, 4:, Fig. 4, and Fig. 4 is a longitudinal vertical section on the line 5, 6,

forwardly inclined downward to facilitate the gill-pins passing the said casting, or throat-piece.

The passageway through the said casting,

or throat-piece, which or throat-piece, has in it a circular recess a in which the movable nipper-j aw B, can turn, the said jaw, being fixed toa shaft C,

mounted in bearings c c, on'each side of the jaw B. Also fixed to theshaft C, is a plate, or disk, E, in which, and also in the part of the casting A, which forms one of the bearings of the shaft C, are slots which receive the bent parts d at, and near, the ends of the coiled torsional spring D, which tends to turn the nipper-jaw B, until the part B, thereof comes in contact with the stop a By turning the plate, or disk, E, in the reverse direction, against the torsional pressure of the said spring, the jaw B, can be brought into such a position that the passage-way through. the casting A, is fully opened for cleaning, or other purpose. The clearing action will also take place while the nipper is in operation, so that it will not choke and break the yarn.

The wearing surface of the jaw B, is constituted by a roller B secured in a circular recess in the jaw B, by a screw 6, and held in position by a pin 71 engaging one, or other, of a cir cular series of holes be, in the inner side of the roller B and the head of a screw 6 screwed into the jaw B, the said screw-head sufliciently overlapping the outer face of the roller B roller B in line with the holes I), are holes 71 so that, when the working part of the periphery of the said roller B becomes worn, a fresh working part can, after removing the jaw B, be readily brought into position for wear by removing the screws Z) and b disengaging the roller B from the pin 6 and rotating the said roller through sufficient part of a rotation to bring the next hole b opposite the pin 6 (which can readily be effected by bringing the coincident hole o opposite a mark on the jaw B, in proximity to the roller B then moving the roller B in again so that the said pin b ,-engages the said next hole 5 and then securing the roller B in its adjusted position by the screws Z) and 6 The part f of the circular recess (o ,.which part constitutes the stationary nipper-jaw, is in a removable piece F, secured in the casting'A, by a pin F, by removing which the piece F, can be readily forcedout by a tool introduced at f, and engaged with a notch F, in the said piece F.

In the said piece F, is the aforesaid V, or ,U, shaped groove, f which assists in condensing and equalizing the fibers as they pass therethroughon their way to the spin ning portion of the apparatus.

In the outer side face of the tion theretoand a torsion spring tending to swing the pivoted jaw into sliver-gripping engagement with the fixed abutment.

2. In a construction such as specified in claim 1, a roller carried by the jaw and forming the'sliver-gripping element thereof.

In a construction such as specified in claim 1, a roller carried by the jaw and forming the sliver-gripping element thereof, together with means for adjusting and holding said roller to bring different portions ofits periphery into bearing position.

4:. In a construction such as specified in claim 1, a renewable wearing part carried by the jaw, and means for adjusting and secur ing said wearing part on the jaw to bring different portions thereof into wearing position. 7 7

5. In a construction such as specified in claim 1, a renewable wearing block secured to the fixed abutment, said block having a guide groove formed therein leading to the point of sliver-gripping engagement with the pivoted jaw.

6. In a sliverv nipper of the type described, a pivoted jaw, a spindle therefor, a disk on the spindle and a torsion spring engaged at one end with said disk to yieldingly hold the same in sliver-gripping position, but permitting the jaw to yield against the torsional action of the spring.

.7. In a sliver nipper of the type described, a pivoted aw, a Spindle therefor, a diskon the spindle and a torsion spring engaged at one end with said disk to yieldingly hold the same in sliver-gripping position, but permitting the jaw to yield against the tersional action of the spring, together with a stop limiting the rotation of the jaw against the action of said spring.

8. Iri a sliver nipper of the type described,

afixed abutment, a jaw pivoted with relaname to this specification in the presence of two subscribing witnesses.

V JOSEPH LOVETT. lVitnesses: V

,J. Lovn'rr JNo. A. dORBEN. 

